increase verbosity of checkNotNull calls
disable disk threshold allocation decider for crate test cluster
wait for discovery to discover missing node in python process tests
try fix some irregularly failing test methods
more verbose udc ping test
fix udc test when no hardware address can be determined
add missing ensureGreen() calls to TransportSQLActionTest
fix BlobEnvironmenttests on ubuntu
Merge pull request #1228 from crate/m/test_fixes

M/test fixes
fix flaky test by using REFRESH statement
add DEBUG_MODE constant to Constants

enabling that flag will result in more helpful stacktraces
from SQLActionExceptions which is very helpful during
development/debugging
fix: some shard errors were not being raised and so the shard failed silently
when some kind of errors, like an Out of memory error occured.
fixed failing tests due changes in error message
throw exception when trying to copy from missing partition
Merge pull request #1239 from crate/dobe-fix-copy-partition

throw exception when trying to copy from missing partition
use ESCount also for partitioned tables
change Analysis creation
updated changelog to reflect releases 0.44.6, 0.44.5
0.44.4, 0.43.5, 0.42.5, 0.44.3, 0.43.4, 0.42.4
use queryandfetch for normal select
fixed QueryAndFetchNodeTest